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PostgreSQL 7.3.21 Documentation
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3.5. pg_amproc

pg_amproc stores information about support procedures associated with index access method operator classes. There is one row for each support procedure belonging to an operator class.

Table 3-5. pg_amproc Columns

Name	Type	References	Description
amopclaid	`oid`	pg_opclass.oid	the index opclass this entry is for
amprocnum	`int2`		support procedure index
amproc	`regproc`	pg_proc.oid	OID of the proc

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